I need to study flow properties for a particular cascade that I've designed. I tried out first with the simplest conditions using ANSYS FLUENT.

My fluid model in inviscid, incompressible(Euler) and subsonic. It is a compressor cascade configuration. Inlet condition is given to be velocity inlet and exit as outflow. The top and bottom surfaces are periodic (translational). I have attached an image of my geometry .

For this simple configuration, Fluent says there's reverse flow occuring on outlet face.
Would anyone happen to know what could be the possible reason?

msaeedsadeghi

December 28, 2012 12:20

You may need to add a free channel to outlet.

itsqi7

January 24, 2013 23:15

Quote:

Originally Posted by msaeedsadeghi
(Post 399330)

You may need to add a free channel to outlet.

Hi, could you pls specify how to add that? Thanks!

msaeedsadeghi

January 25, 2013 01:18

Quote:

Originally Posted by itsqi7
(Post 403921)

Hi, could you pls specify how to add that? Thanks!

Add it in Gambit. Add a straight channel to it. Reverse flow will be disappeared if the length was enough.

itsqi7

January 25, 2013 01:20

Quote:

Originally Posted by msaeedsadeghi
(Post 403928)

Add it in Gambit. Add a straight channel to it. Reverse flow will be disappeared if the length was enough.